Cytoprotective effects of grape seed extract on human gingival fibroblasts in relation to its antioxidant potential

Yusuke Katsuda, Yoshimi Niwano, Takuji Nakashima, Takayuki Mokudai, Keisuke Nakamura, Satomi Oizumi, Taro Kanno, Hiroyasu Kanetaka, Hiroshi Egusa

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Cytoprotective effects of short-term treatment with grape seed extract (GSE) upon human gingival fibroblasts (hGFs) were evaluated in relation to its antioxidant properties and compared with those of a water-soluble analog of vitamin E: trolox (Tx). GSE and Tx showed comparable antioxidant potential in vitro against di(phenyl)-(2,4,6-trinitrophenyl)iminoazanium (DPPH; a stable radical), hydroxyl radical (·OH), singlet oxygen (1O2), and hydrogen peroxide (H2O2). Pretreatment or concomitant treatment with GSE for 1 min protected hGFs from oxidative stressors, including H2O2, acid-electrolyzed water (AEW), and 1O2, and attenuated the intracellular formation of reactive oxygen species induced by H2O2 and AEW. Tx also reduced the H2O2- and AEW-induced intracellular formation of reactive oxygen species, but showed no cytoprotective effects on hGFs exposed to H2O2, AEW, or 1O2. These results suggest that the cytoprotective effects of GSE are likely exerted independently of its antioxidant potential.

Original languageEnglish
Article numbere0134704
JournalPloS one
Volume10
Issue number8
DOIs
Publication statusPublished - 2015 Aug 10
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

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